Double-sprocket bicycle frame



FIG. 1 is a left side elevation view of a double-sprocket bicycle frame showing the new design.

FIG. 2 is detailed close-up view of the spring associated with the double-sprocket bicycle frame.

FIG. 3 is a right side elevation view of a bicycle frame showing the new design

FIG. 4 is top plan view of the double-sprocket bicycle frame.

FIG. 5 is a bottom plan view of the double-sprocket bicycle frame.

FIG. 6 is a front elevation view of the double-sprocket bicycle frame; and,

FIG. 7 is rear elevation view of the double-sprocket bicycle frame.

The broken lines illustrate portions of the bicycle frame which form no part of the claimed design. 

I claim the ornamental design for the double-sprocket bicycle frame, as shown and described. 